As of March 23, 2026, the three largest insider holders of ENTG are Bertrand Loy (Executive Chair, 217.77K shares), Todd James Edlund (Evp Coo, 175.40K shares), Brian F. Sullivan (Director, 97.59K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Bertrand Loy | Executive Chair | 217,767 | 0 | 26 Feb, 2026 |
| Todd James Edlund | Evp Coo | 175,399 | 0 | 01 Apr, 2022 |
| Brian F. Sullivan | 97,591 | 0 | 21 May, 2021 | |
| Stuart Tison | Svp President, Scem | 85,372 | 0 | 21 Feb, 2023 |
| Susan G. Rice | Svp, Global Human Resources | 70,022 | 0 | 23 Feb, 2026 |
| David Reeder | President Ceo | 58,457 | 0 | 21 Aug, 2025 |
| Michael A Bradley | 53,488 | 0 | 29 Apr, 2022 | |
| Clinton M. Haris | Svp President, Aps Division | 49,933 | 0 | 23 Feb, 2026 |
| Daniel D. Woodland | Svp President, Ms Division | 48,515 | 0 | 23 Feb, 2026 |
| Joseph Colella | Svp And General Counsel | 45,835 | 0 | 23 Feb, 2026 |
| Robert Nicholas Burns | 44,418 | 0 | 03 May, 2021 | |
| Linda Lagorga | Svp, Chief Financial Officer | 33,810 | 0 | 23 Feb, 2026 |
| Olivier Blachier | Svp, Chief Strategy Officer | 29,497 | 0 | 23 Feb, 2026 |
| Bruce W. Beckman | Svp, Finance | 28,821 | 0 | 21 Feb, 2023 |
| Neil Richards | Svp, Goscq | 27,849 | 0 | 08 Apr, 2025 |
| William James Shaner | Svp President, Amh | 25,676 | 0 | 03 Apr, 2024 |
| Azita Saleki-Gerhardt | 24,971 | 0 | 25 Apr, 2025 | |
| James P Lederer | 20,434 | 0 | 11 Dec, 2025 | |
| Gregory B Graves | Evp Cfo | 19,703 | 0 | 23 Feb, 2023 |
| James Gentilcore | 18,507 | 0 | 25 Apr, 2025 | |
| Michael Besnard | Svp, Chief Commercial Officer | 17,936 | 0 | 08 Apr, 2025 |
| Paul L H Olson | 17,199 | 0 | 29 Apr, 2022 | |
| James Anthony O'Neill | Svp Cto | 15,704 | 0 | 08 Apr, 2025 |
| Yvette Kanouff | 11,121 | 0 | 25 Apr, 2025 | |
| Corey Rucci | Svp, Business Development | 8,540 | 0 | 31 Mar, 2022 |
| Michael Sauer | Vp, Controller Cao | 7,790 | 0 | 23 Feb, 2026 |
| Rodney Clark | 7,500 | 0 | 13 Jun, 2025 | |
| James Robert Anderson | 4,877 | 0 | 25 Apr, 2024 | |
| James Robert Anderson | 4,877 | 0 | 25 Apr, 2024 | |
| Inc Entegris | 4,104 | 0 | 25 Apr, 2025 | |
| Mary G Puma | 4,104 | 0 | 25 Apr, 2025 | |
| James Gentilcore | 0 | 4,090 | 19 Oct, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 24 Feb, 2026 | Bertrand Loy | Common Stock | A | 9,838 | $98.11 | 327,605 | D | M |
| 24 Feb, 2026 | Bertrand Loy | Common Stock | D | 6,955 | $140.49 | 320,650 | D | S |
| 24 Feb, 2026 | Bertrand Loy | Common Stock | D | 2,783 | $141.45 | 317,867 | D | S |
| 24 Feb, 2026 | Bertrand Loy | Common Stock | D | 100 | $142.19 | 317,767 | D | S |
| 24 Feb, 2026 | Bertrand Loy | Common Stock | D | 47,611 | $138.57 | 270,156 | D | S |
| 24 Feb, 2026 | Bertrand Loy | Common Stock | D | 2,067 | $139.14 | 268,089 | D | S |
| 25 Feb, 2026 | Bertrand Loy | Common Stock | D | 46,522 | $137.32 | 221,567 | D | S |
| 25 Feb, 2026 | Bertrand Loy | Common Stock | D | 3,800 | $138.57 | 217,767 | D | S |
| 24 Feb, 2026 | Bertrand Loy | Employee Stock Option (Right to Buy) | D | 9,838 | - | 61,534 | D | M |
| 19 Feb, 2026 | Susan G. Rice | Common Stock | A | 5,018 | $0.00 | 72,624 | D | A |
| 19 Feb, 2026 | Linda Lagorga | Common Stock | A | 8,840 | $0.00 | 36,760 | D | A |
| 19 Feb, 2026 | Clinton M. Haris | Common Stock | A | 3,345 | $0.00 | 51,782 | D | A |
| 19 Feb, 2026 | Olivier Blachier | Common Stock | A | 3,011 | $0.00 | 32,545 | D | A |
| 19 Feb, 2026 | Daniel D. Woodland | Common Stock | A | 4,014 | $0.00 | 50,918 | D | A |
| 19 Feb, 2026 | Michael Sauer | Common Stock | D | 165 | $132.67 | 7,790 | D | F |
| 19 Feb, 2026 | Bertrand Loy | Common Stock | A | 34,624 | $0.00 | 341,046 | D | A |
| 19 Feb, 2026 | Joseph Colella | Common Stock | A | 4,850 | $0.00 | 49,989 | D | A |
| 19 Feb, 2026 | Clinton M. Haris | Common Stock | D | 1,003 | $132.67 | 50,779 | D | F |
| 19 Feb, 2026 | Susan G. Rice | Common Stock | D | 1,473 | $132.67 | 71,151 | D | F |
| 19 Feb, 2026 | Linda Lagorga | Common Stock | D | 2,950 | $132.67 | 33,810 | D | F |